Motional logo
Motional

We're making driverless vehicles a safe, reliable, and accessible reality.

Principal Engineer – Tech Lead, Embodied AI, Off-Board Performance Evaluation

AI EngineerMachine Learning EngineerFull TimeRemoteSeniorTeam 1,001-5,000Since 2020H1B SponsorCompany SiteLinkedIn

Location

United States

Posted

7 days ago

Salary

$200K - $275K / year

Seniority

Senior

Bachelor Degree10 yrs expEnglishCloudPython

Job Description

Principal Engineer – Tech Lead, Embodied AI, Off-Board Performance Evaluation

Motional

• Technically oversee the architecture to identify, describe, and enrich events in historical vehicle logs using Multimodal LLMs. • Oversee the off-board ingestion and fusion of semantic scene descriptions, ego-centric kinematics, and internal autonomy telemetry to create a holistic diagnostic context for LLM inference. • Develop structured prompting templates utilizing Contextual Prompting (CP), Chain-of-Thought (CoT), and In-Context Learning (ICL) to evaluate scenarios. • Architect the integration of foundation models into the Metrics Engine (ME), designing efficient cascade filtering and log slice parallelization strategies to scale high-volume LLM inference across simulation and on-road drive logs while managing computational latency and costs. • Define, design, and implement key metrics to evaluate autonomous vehicle performance, such as lane change capability, oscillations, and braking. • Deploy and manage a Retrieval-Augmented Generation (RAG) vector database containing codified AV Driving Policies to ground off-board LLM evaluations in specific Operational Design Domains. • Serve as a technical escalation point and collaborate with Autonomy (Planner, Prediction, Perception) and Systems teams to deliver high-signal, enriched events. • Drive the transition toward Direct Vector-LLM Fusion utilizing emerging Physical AI ecosystems and open-weights Vision-Language-Action (VLA) models to process telemetry off-board without text-translation bottlenecks.

Job Requirements

  • 10+ years of professional experience in software engineering, applied AI/ML, or autonomous vehicle systems development.
  • Bachelor's degree in Computer Science, Engineering, Robotics, or a related field.
  • Proven experience working with Large Language Models (LLMs) and Vision-Language Models (VLMs) for reasoning, parsing, and scene description.
  • Experience with parameter-efficient fine-tuning and deploying open-weights models on internal infrastructure.
  • Familiarity with local and cloud vector databases, such as LanceDB, for housing output vector embeddings.
  • Experience with adversarial scenario generation and closed-loop simulation environments.
  • Strong background leveraging software to develop frameworks, libraries, and tools for calculating and aggregating AV performance metrics.
  • Strong analytical and problem-solving skills, particularly in the context of complex system performance evaluation.
  • Expert-level proficiency in Python and strong understanding of software development principles.

Benefits

  • medical
  • dental
  • vision
  • 401k with a company match
  • health saving accounts
  • life insurance
  • pet insurance
  • more

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